525432251 has 6 divisors (see below), whose sum is σ = 554542452. Its totient is φ = 497777580.

The previous prime is 525432221. The next prime is 525432253. The reversal of 525432251 is 152234525.

It is a de Polignac number, because none of the positive numbers 2^k-525432251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525432253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 727385 + ... + 728106.

It is an arithmetic number, because the mean of its divisors is an integer number (92423742).

Almost surely, 2^525432251 is an apocalyptic number.

525432251 is a deficient number, since it is larger than the sum of its proper divisors (29110201).

525432251 is a wasteful number, since it uses less digits than its factorization.

525432251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455529 (or 1455510 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 525432251 is about 22922.3090241799. The cubic root of 525432251 is about 806.9356610546.

Adding to 525432251 its reverse (152234525), we get a palindrome (677666776).

The spelling of 525432251 in words is "five hundred twenty-five million, four hundred thirty-two thousand, two hundred fifty-one".